Star in the constellation Vulpecula
27 Vulpeculae is a single, blue-white star in the northern constellation of Vulpecula . It is a dim star, visible to the naked eye, with an apparent visual magnitude of 5.59. An annual parallax shift of 10.6692±0.0483 mas provides a distance estimate of about 306 light-years . It is moving closer with a heliocentric radial velocity of −22 km/s, and will make perihelion passage at a distance of around 119 ly (36.56 pc) in 3.75 million years.
This is a B-type main-sequence star with a stellar classification of B9 V. It is spinning rapidly, showing a projected rotational velocity of 335. The star has an estimated 2.77 times the mass of the Sun and about 3.1 times the Sun's radius . It is radiating 75 times the Sun's luminosity from its photosphere at an effective temperature of 10,789 K.
References
^ Brown, A. G. A. ; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties" . Astronomy & Astrophysics 649 : A1. arXiv :2012.01533 . Bibcode :2021A&A...649A...1G . doi :10.1051/0004-6361/202039657 . S2CID 227254300 .doi :10.1051/0004-6361/202039657e ). Gaia EDR3 record for this source at VizieR .
^ Paunzen, E. (2015), "A new catalogue of Strömgren-Crawford uvbyβ photometry", Astronomy & Astrophysics , 580 : A23, arXiv :1506.04568 , Bibcode :2015A&A...580A..23P , doi :10.1051/0004-6361/201526413 , S2CID 73623700 .
^ Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal , 74 : 375–406, Bibcode :1969AJ.....74..375C , doi :10.1086/110819
^ Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics , 537 : A120, arXiv :1201.2052 , Bibcode :2012A&A...537A.120Z , doi :10.1051/0004-6361/201117691 , S2CID 55586789 .
^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331, arXiv :1108.4971 , Bibcode :2012AstL...38..331A , doi :10.1134/S1063773712050015 , S2CID 119257644 .
^ Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters , 32 (11): 759–771, arXiv :1606.08053 , Bibcode :2006AstL...32..759G , doi :10.1134/S1063773706110065 , S2CID 119231169 .
^ Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy & Astrophysics , 367 (Third ed.): 521–24, arXiv :astro-ph/0012289 , Bibcode :2001A&A...367..521P , doi :10.1051/0004-6361:20000451 , S2CID 425754 .
Huang, W.; Gies, D. R. (August 2008), "Stellar Rotation in Field and Cluster B Stars", The Astrophysical Journal , 683 (2): 1045–1051, arXiv :0805.2133 , Bibcode :2008ApJ...683.1045H , doi :10.1086/590106 , S2CID 18926523 , 1045–1051.
"27 Vul" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2018-04-21.Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society , 389 (2): 869–879, arXiv :0806.2878 , Bibcode :2008MNRAS.389..869E , doi :10.1111/j.1365-2966.2008.13596.x , S2CID 14878976 .
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27 Vulpeculae in the constellation Vulpecula
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